Steam-trap.



No. 652,562* Patented June 26, |900.

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CHARLES IV. LYON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF ANDAARON E. CARPENTER, OF SAME PLACE.

STEAMMTRAP.

SPECIFICATION forming part of Letters ,Patent No. 652,562, dated J' une26, 1900, Application file d October 23, 1899.V Serial No. 734,55l (Nomodel.)

To @ZZ when?, t may concern,.-

Be it known that LOHARLESV. LYON,a citi- Zen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Steam-Traps, of which the following is a speciiication.

My invention relates to that class of steamtraps which contain anexpansion vessel iilled with fluid which is readily susceptible toexpansion and contraction by slight changes of temperature, the objectsof my invention being to simplify and cheapcn the construction of such atrap and to render it more eliicient in action than usual.

In the accompanying drawings, Figure 1 is a vertical section of asteam-trap constructed in accordance with my invention. Fig. 2 is atransverse section of the same on the line a a, Fig. 1; and Fig. 3 is atransverse section on the line l) b, Fig. 1.

The casing of the traphas opposite parallel sides 1, a rounded end 2,forming a quartercircle, a straight end 3, and a stem or shank 4, whichis expanded at the bottom, so as to form a foot 5, whereby the casingcan be secured to any available support, the open end of the casingbeing furnished with a cap or cover 6, which is secured in place bysuitable bolts and nuts or other equivalent fastenings. Surrounding themouth or open end of the casing is a projecting rib 7, which has anabrupt shoulder at one side and a convex outer face bearing upon arectangular packingstrip 8, contained in a recess of like shape formedin the inner side of the cap or cover 6, the purpose of this rib withabrupt shoulder and convex outer face, in connection with a rectangularpacking-strip, being to concentrate the pressure upon a limited area ofthe latter at the junction of the abruptand convex faces ofthe rib, soas to more readily form a tight joint, the convex-faced rib under agiven amount of pressure indenting the packing-strip to a much greaterextent than would a atdaced rib, thereby preventing leakage due toinequalities in the surface of the rib. Hence I have found that with arib of this character it is not necessary to plane the face of the ribin order to insure a tight joint, a rough :finishing with a tile beingall that is necessary.

The curved expansion vessel 9 occupies the lower portion of the chamberwithin the casing of the trap and bears at one end against a set-screw10, which is adapted to a threaded opening in the outer end of a hollowboss 12, which projects from the end 3 of the casing, a lock-:uut 13serving to secure the set-screw 10 in position after adjustment, and acap 14, screwed onto the externally-threaded end of the boss 12,serving-to protect and conceal the head of theV set-screw 10, so as toprevent tampering with the same by ignorant or malicious persons, sincea proper adjustment of this set-screw is necessary in order that thetrap may best perform its intended function. The opposite end of theexpansion vessel 9 bears upon a valve 15, which operates in conjunctionwith a valve-seat 16, screwed into the end 2 of the casing, said endhaving a projecting boss 17 internally threaded for the reception of thepipe which is to be trapped.

The valve 15. has a stein 1S, which passes through a central opening ina bearing-plate 19 and rests at its opposite end in a boss 20, formedupon the head 30 of the expansion vessel 9, a spring 21 interposedbetween the plate 1) and the boss serving to keep said head 30 of thevessel 9 constantlyiu engagement with the end of the set-screw 10, sothat the latter thus constitutes a fixed abutment for the expansionvessel, the expansion of the latter having the edect of closing thevalve 15 against its seat, while the contraction of the vessel has theeffect of withdrawing the valve from its seat, the head 22 of the vesselin that case acting upon a pin 23, which projects from the valve-ste1n1S. The head 30 of the expansion vessel also has a boss 11, whichprojects into the opening surrounding the set-screw 10, and thusprevents the expansion vessel from dropping down to the bottom of thecasing 1 if the set-screw 10 should be inadvertently Withdrawn to such'an extent as to fail to engage with the boss 11.

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edges of the sides 1 of the casing, so that said plate 19, with thevalve-stem and expansion vessel carried thereby, can be readily insertedinto place in the casing and as readily Withdrawn therefrom. Hence theseparts can be properly tted together outside of the casing, and thematter of assembling the parts of the trap is thereby materiallyfacilitated, with consequent reduction in expense.

The end 3 of the casing has at the bottom a projecting boss 27,internally threaded for the reception of the drain-pipe, through whichthe Water of condensation is discharged from the trap.

The cap or cover 6 of the casing has a re- 'cess 28 therein formingchambers or receptacles for cold Water, the use of such cold water beingresorted to when it is desired to effect the contraction of the vessel 9more rapidly thanwould be possible under the norm al conditions ofworking of the trap.

The rounding of the end 2 of the casing serves to contract the area ofthe chamber within the 'casing and insures the complete drainage of saidchamber, the outlet 27 being at the lowest point of the chamber Whetherthe casing is set horizontally or vertically.

The valve-seat 16 is detachable from the casing, so that in the event ofits becoming worn it may be readily removed and a new seat substitutedfor it.

Having thus described my invention, I claim and desire to secure byLetters Patent- 1. The combination in a steam-trap, of the ment for saidexpansion vessel, and a Valveseat, the valve and its stem, and a centralbearing-plate having an opening for the reception of said valve-stem,said plate having abutment for said vessel, and a valve-seat,

the valve and its stem engaged by said eXpansion vessel, a bearing-platehaving an opening for the reception of said stem, and having portionsadapted to seats in the casing from which it is readily removable, andaspring interposed between said bearing-plate and that end of theexpansion vessel which is in 'con'- tact with the abutment in thecasing, substantially as specified.

4c. The combination, in a steam-trap,.of the .expansion vessel, with acasing having an abutment for said vessel, and a valve-seat,

the valve and its stem engaged by said expanf sion vessel, abearing-plate having an open- L ing for the reception of said valve-stemand having trunnions at the sides, slotted internal ribs on the sides ofthe casing forming seats for said trunnions, and a spring interposedbetween the bearing-plate and that end of the expansion vessel which isin contact 5. The combination in a steamstrap, of an expansion vessel ofsemicircular form, and a l casing having a rounded end conforming to theshape of said expansion vessel and a flat bottom leading directly fromsaid rounded end to the outlet, substantially as specified.

6.- 'Ihe combination in a steam-trap, of au expansion vessel, a valveoperated thereby,

` and a casing having a cap or cover with Water chambers or receptaclestherein, substan- 5 tially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES W. LYON. Vtitnesses:

F. E. BECHTOLD, Jos. I-I. KLEIN.

With the abutment in the casing,substantially as specified.

